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CVE-2018-10548

27
FAUCET Score

CVE-2018-10548 is a denial-of-service vulnerability affecting PHP versions before 5.6.36, 7.0.30, 7.1.17, and 7.2.5, as well as products from Canonical, Debian, and NetApp. It stems from a NULL pointer dereference in the LDAP extension (ext/ldap/ldap.c) when mishandling the ldap_get_dn return value. This vulnerability carries a high severity CVSS score of 7.5, indicating it can be exploited remotely without authentication to cause an application crash. While its EPSS score suggests a moderate likelihood of exploitation, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.6.36CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.0.30CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 7.1.0, < 7.1.17CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 7.2.0, < 7.2.5CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
8.68%
Probability of exploitation in next 30 days
EPSS Percentile
94.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0868 is in the 91st percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-php71-php-0:7.1.30-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-php71-php-0:7.1.30-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-php71-php-0:7.1.30-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-php71-php-0:7.1.30-1.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php53
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-php70-php

Vendor Advisories (1)

redhatCVE-2018-10548Moderate

php: NULL pointer dereference due to mishandling of ldap_get_dn return value allows DoS via malicious LDAP server reply

Apr 26, 2018

References

php.net / ChangeLog-5.php
PatchVendor Advisory
php.net / ChangeLog-7.php
PatchVendor Advisory
access.redhat.com / errata/RHSA-2019:2519
bugs.php.net / bug.php
Issue TrackingPatchVendor Advisory
lists.debian.org / debian-lts-announce/2018/05/msg00004.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2018/06/msg00005.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201812-01
Third Party Advisory
security.netapp.com / advisory/ntap-20180607-0003
Third Party Advisory
usn.ubuntu.com / 3646-1
Third Party Advisory
usn.ubuntu.com / 3646-2
Third Party Advisory
debian.org / security/2018/dsa-4240
Third Party Advisory
tenable.com / security/tns-2018-12
Third Party Advisory
tenable.com / security/tns-2019-07
securityfocus.com / bid/104019
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040807
Third Party AdvisoryVDB Entry